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base repository: keploy/samples-java
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compare: feat/hibernate-cache-tour-postgres
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  • 2 commits
  • 12 files changed
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Commits on Apr 25, 2026

  1. feat(hibernate-cache-tour): add Postgres v3 codec drift reproducer 

    Spring Boot 3 + Hibernate 6 + Postgres 16 sample that exercises two
specific drift signatures in keploy's Postgres v3 logical codec:

  * Issue #1 — pgjdbc prepareThreshold flip. Each WHERE-id JpaRepository
    finder is hit with the same id-space repeating every 4 calls so the
    5th execution on a given handle straddles pgjdbc's prepareThreshold
    (default 5) and flips the bind format text -> binary mid-recording.

  * Issue #3 — Hibernate StatementCache classification drift. Query +
    second-level cache are enabled (EHCache 3.x via JCache); a request
    interceptor evicts the L2 cache on every keploy.io/test-name change
    so per-test boundaries observably re-run the pgjdbc bind path.

Schema: customer(id, name, email) + customer_tag(id, customer_id, tag,
priority). init.sql seeds 4 customers (ids 1..4) and 8 tags so the CI
exerciser can hit deterministic ids without first POSTing fixtures.

Endpoints: POST /customer, GET /customer/{id}, GET /customer/{id}/tags,
GET /tags?priority=N, POST /tag.

The CI harness driving this sample lives in keploy/integrations at
.ci/scripts/java/hibernate-cache-tour-postgres/.

Signed-off-by: Shubham <shubham@keploy.io>
    @slayerjain
    slayerjain committed Apr 25, 2026
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  2. fix(hibernate-cache-tour): add spring-boot-starter-cache for L2 wiring 

    The Hibernate L2 / query cache is enabled in application.properties via
hibernate-jcache + EHCache 3.x, but the Spring context still needs a
CacheManager bean to satisfy the JPA layer's cache-related autowires.
Without spring-boot-starter-cache, Spring never auto-configures one and
entityManagerFactory creation fails on boot — Tomcat binds 8080 but the
JPA layer is dead, so every request crashes after the dispatcher.

Dropping the starter in next to hibernate-jcache fixes it; the rest of
the cache config (region factory, EHCache config) is unchanged.

Signed-off-by: Shubham <shubham@keploy.io>
    @slayerjain
    slayerjain committed Apr 25, 2026
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